Template:Hertig1956 table1

From Embryology
Table 1
Ovum Numbers Streeter Horizon Estimated Age of Ovum (days) Probable Day of Cycle on which ovulation occurred Probable Day of cycle on which fertile coitus occurred Range of EOT Range in onset of Catamenia Day of Cycle on which Operation occurred Histologic "Dating" or Pattern of Endometrium Age of Patient No. of Labor No. Abortions Previous Publication References
8698 II Segmenting egg 2 cells 1.5-2.5 12-13 12* 9-15 25-27 13 17 42
8904 II 12 ± cells 3 16 15 or 17 7-18 23-30 20 18 35
8794 III Free blastocyst 58 cells 4 13 12 8-14 24-26 17 19 40
8663 III 107 cells 4.5 22 22 18-25 34-37 27 22 38
8225 Va Ovum implanted but avillous. Solid trophoblast 7 14 14* 8-18 24-30 22 21 30
8020 Va 7 17 16* 12-20 28-32 24 Earliest progestational change 38
8155 Va 8 13 12 or 13 12-16 28 22 Earliest progestational hyperplasia 29
8215 Vb Beginning lacunae 9 46 45 or 46 11-43 27-55 56 Earliest progestational hyperplasia 30
8171 Vb 9 13 12 11-18 27-30 23 Earliest progestational hyperplasia 38
8004 Vb 9 15 15 15-22 31-34 25 Moderate progestational hyperplasia 29
7699 Vc Lacunae well-formed, extra-coelomic cavity present 11 14 12 10-17 26-29 25 Moderate progestational hyperplasia 34
7950 Vc 12 14 13* 11-21 27-33 26 Moderate progestational hyperplasia 31
7700 Vc 12 17 15* 17-22 33-34 29 Advanced progestational hyperplasia 34
8558 Vc 12 13 12 or 13 11-23 27-33 25 Advanced progestational hyperplasia 38
8330 Vc 12 11 10 7-14 23-26 23 Advanced progestational hyperplasia 31
Carnegie Embryo Vc 12 16 15 13-17 29 29 Advanced progestational hyperplasia 32
8672 VI Primitive villi, distinct yolk-sac 13 12 12* 11-23 27-35 25 Advanced progestational hyperplasia 33
8360 VI 13 15 14 10-18 26-30 28 Early decidua 33
7801 VI 13 14 14 8-16 24-28 28 Early decidua 33
7802 VII Branching villi, axis of germ disc defined 16 17 16 10-21 26-33 33 Early decidua 37
8602 VII 17 11 11 13-17 29 28 Early decidua 34
  • The microscopic pattern of the endometrium during the last 14 days (postovulatory or progestational phase) of any menstrual cycle follows a regular identifiable histologic sequence of events. The "dating" for each of these postovulatory days conirms to what is termed a “standard cycle" with ovulation on day 14 and menstruation on day 28.
  • Coital date reported from memory, accuracy questionable?
  • This ovum was fixed in acetone for histochemistry (see MSS. page 448) and has not been given an accession number at the Carnegie Laboratory. Because of the different fixation technique, its measurements are not included in table 3.
  • In a few instances where the catamenial history was insufficient, the range in onset of catamenia was widened arbitrarily afford a longer potential ovulation time.
  • Catamenia or a period "Periods are 28 days apart." Obviously this patient ovulated somewhat earlier than the EOT of 13-17 in order to have roduced a 17-day ovum on day 28 of the cycle. Therefore she must have ovulated about day 11.


Tables as Images: table 1 | table 2 | table 3 | table 4 | 1956 Hertig Rock

Reference: Hertig AT. Rock J. and Adams EC. A description of 34 human ova within the first 17 days of development. (1956) Amer. J Anat., 98:435-493.